IED EoC Review

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The preferred ANSI standard for dimensioning mechanical drawings is:

• Unidirectional.
• Aligned.
• Abridged.
• Vertical.

How does this dimensioning example break convention?

• It includes extension lines that cross dimension lines.

• It includes dimensions that can be deduced.

• It includes duplicate dimensions.

• It includes dimensions outside of the adjacent views.

The MOST important rule in dimensioning is to:

• Maintain clarity.
• Always state dimensions as fractional measurements
• State measurements as decimal inches on metric drawings.
• Place as many dimensions in the top view as possible.

Which is NOT a dimensioning rule?

• Place dimensions directly on the view
• Avoid dimensioning hidden features
• Place dimensions between adjacent views
• Place the shortest dimension closest to the object

How does this dimensioning example break convention?

• It includes duplicate dimensions.

• It includes dimensions to hidden lines.

• It uses extension lines that cross.

• All of the above.

Current dimensioning practices require the DIAMETER symbol be:

• The abbreviation "DIA".
• The letter "D".
• A circle with a slash extending through it.
• Given AFTER the number representing its size.

Dimensioning standards in the United States are established by:

• USDA.
• ANSI.
• CAD.
• USAF.

Worldwide standards for measurement

• Significant Digits

• SI Measurement System

• Graph

• Precision

Engineering drawings dimensioned with METRIC measurements will use:

• Centimeters.
• Millimeters.
• Decimeters.
• Meters.